104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
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/*
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* Copyright (c) 2000 Kungliga Tekniska H<EFBFBD>gskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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RCSID("$Id: environment.c,v 1.1.1.1 2001/09/17 12:09:55 assar Exp $");
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#endif
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#include <stdio.h>
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#include <string.h>
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#include "roken.h"
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/*
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* return count of environment assignments from `file' and
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* list of malloced strings in `env'
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*/
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int
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read_environment(const char *file, char ***env)
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{
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int i, k;
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FILE *F;
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char **l;
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char buf[BUFSIZ], *p, *r;
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if ((F = fopen(file, "r")) == NULL) {
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return 0;
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}
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i = 0;
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if (*env) {
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l = *env;
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while (*l != NULL) {
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i++;
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l++;
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}
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}
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l = *env;
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/* This is somewhat more relaxed on what it accepts then
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* Wietses sysv_environ from K4 was...
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*/
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while (fgets(buf, BUFSIZ, F) != NULL) {
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if (buf[0] == '#')
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continue;
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p = strchr(buf, '#');
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if (p != NULL)
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*p = '\0';
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p = buf;
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while (*p == ' ' || *p == '\t' || *p == '\n') p++;
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if (*p == '\0')
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continue;
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k = strlen(p);
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if (p[k-1] == '\n')
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p[k-1] = '\0';
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/* Here one should check that is is a 'valid' env string... */
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r = strchr(p, '=');
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if (r == NULL)
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continue;
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l = realloc(l, (i+1) * sizeof (char *));
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l[i++] = strdup(p);
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}
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fclose(F);
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l = realloc(l, (i+1) * sizeof (char *));
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l[i] = NULL;
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*env = l;
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return i;
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}
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